Fuel rails?? injectors???

[maverickconner]

OK, here is the deal,,, I have a fuel rail setup for a 302, but since I am putting together this 351, the rails will not fit on it due to the short connect hoses on the back. Is there some way to modify the connecter hose or should I try to find a 351 fuel rail setup.... BTW I have a GT40 lower intake...... Also, would a stock setup of 19lb injectors with a 65mm intake be too much underkill for this motor...It is nothing special, just rebuilt....

 

[tonto]

Cut the stock hose off the rails and get some fuel injection hose and just hose clamp it on.
I’m running 19lb. with a 65mm throttle body and a stock MAF on my 5.8 and it runs fine.

 

[Dusty]

The 19 pounders will be fine. If I were you I'd go to the junkyard and swipe the fuel rails off a 5.8L. You can modify the stock 5.0 ones to fit but you have to cut the OE crossover hose off and figure out a way to rig a new one. When I was dealing with this same dilemma a few years back I just welded AN fittings onto the rails to use a braided hose between them. I don't remember what the OE fuel rail tube looks like when you cut the crossover hose off, but if there are barbs of some sort or if you could put a bead on it somehow you could probably just use a short piece of EFI hose and clamps. But like I said the easiest thing would be to just go to the junkyard and get one off a 5.8L. Then again, if you use the 5.8L rails then you'll have a clearance issue with the fuel pressure regulator and the upper plenum if you run the throttle body on the passenger side. Maybe its time for some aftermarket rails and a nice blingy remote fuel pressure regulator.

Sorry about this, I feel all I've done is confuse the situation even more!

Dusty

 

[Dusty]

Well while I was composing that masterpiece Tonto posts the obvious. Do as he says!

 

[SaddleUp]

Be sure you use high pressure clamps for EFI use also when you do this.

 

[Waverous]

I switched from a Cobra computer and 24 lb injectors to a A9L computer and 19 lb injectors. I had the same problem with the fuel rails on my GT40 but corrected it when I cut off the stock hoses and used braided steel line instead. Everything works well

 

[maverickconner]

what computer would you guys suggest for this setup,, I know the A9 is the obvious choice, but I have the zf and don't really need the auto setup... Any other choices and sources for them??? I am just worried about picking up a speed density one compared to the mass air setup... The last conversion I did was with an entire motor with all the goodies,, it was cake,,,, piecing it together seems to be a little more "involved"lol..

 

[Dusty]

I think Ryan has a list of the various computers somewhere on www.fordfuelinjection.com

I would look there first.

Dusty

 

[SaddleUp]

I run an A9P on my 96 5.8L.
A9P = SEFI MAF Auto tranny
A9L = SEFI MAF Manual Tranny

I would probably go with the A9L if I didn't have 2 A9P ECM's already. If/when I go to a ZF I'll probably just keep using the A9P since it can be used for both trannies from what I understand.

 

[Ryan]

my list is here: http://fordfuelinjection.com/catchcodes.html
doesn't matter if you use a auto or manual computer, it's an easy fix. Just don't get the X3Z, I have it, but flashed the A9L program into it ;D

There never was an easy 5.8L fuel rail. The trucks have the regulator on the drivers side, so it hits the upper intake. You could use a heat spacer, but the hood is only so high
I'm not sure what the 95 Cobra-R 5.8L fuel rail is like, but only 250 of them were produced, doubt you'll ever see one.
It's best to cut off the Nylon tube and use new stuff to widen the rail. You can use EFI rubber hose, or get new Nylon.
I'll do an article on widening the fuel rail, just haven't got to that project yet

 

[maverickconner]

Hey Ryan, I appreciate the list,,, it help a lot to know what I am loooking at and looking for...... also, thanks everyone else for the quick response....

Anyone know the difference in the injectors after 96'? I know the plug is different, but I have a explorer harness that I can canabalize if need be..... also, what about the mas on the explorer, is it simply a plug issue?

 

[Ryan]

Injectors didn't change untill much later than 96'

Send me an e-mail, I'd like to research this injector plug issue

 

[67EB_in_619]

I used the injectors from a 96 exploder without any mods.. plugged in fine.

The TPS and IAB plugs on the Throttle body are different than on the GT.. I just put a TPS from a mustang onto the exploder TB and spliced the plug wire for the IAB... but then again I backfire just a little (very quietly) under light load... so might want to get feedback from Ryan before you follow my lead.

I dont know about the spacing issues between the cyls.. but what about a 4.8 fuel rail? Block was wider than on the 5.0 so might work for a 351... I have an extra one at home (from a 4.8 GT) with 19# injectors on it.

 

[maverickconner]

that is what we are trying to find out, will the blue and white 19# injectors from the late 5.0's and the new 5.4/4.6's work with the explorer injector wiring harness and the wiring harness from a 90's mustang..... If so, the cost of the conversion just got cheaper... no one wants the stock blue and whites on ebay,,, they sell them for nothing with a mass air to boot...

 

[Skuzzlebutt]

Be sure you use high pressure clamps for EFI use also when you do this.

That's for sure! I have personaly watch two vehicles burn 'cause the owners thought regular hose clamps were good for fuel injected engines.

 

[maverickconner]

that I will, I have put to much work into it to turn it into a mashmellow melter.....lol.... I am just about ready to put the body back on the frame, after lining the engine compartment and the underside...,,,, but I am on a deadline to get the thing finished before Aug. 12th.... this is my third Bronco( sold one to move to OKLA, sold the second to buy our house), and was my present to myself for getting in Medical School...Now I need it done before Aug. So, I just got the upper intake, and now need the fuel injection stuff lined out....

 

[maverickconner]

Hey Ryan,
what do you think about this computer? J4J1 what should I be worried about?

 

[Ryan]

LOL
funky injectors, parts of a explorer harness, J4J1 computer........
AND you want to be finished in a month?!?!
LOL, you have work to do.


The J4J1 will work, it's a 94-95 5.0L Mustang manual trans.
BUT, it's not the ideal choice. It is not as good as the 89-93 Mustang computers. You could have lots of performance and drive-ability problems in the future.

 

[maverickconner]

why is that, do the computers tell the engine different things,,,, isn't it a basic program converted to different moduals,,, ie timing, air, fuel, pressure,,,, please help on this,,, what makes the A9P the choice to have?

what type of performance problems??

PS the rest of the stuff I am just trying to be cheap because I have spare parts around....

 

[Ryan]

LOL, if only it was that simple.

Diferent computers have different priorities, different learning curves, run at different speeds, different abilities, different emisions standards.

The 89-93 stang computers are basicly stand alone engine computers. They learn very quickly, and react very quickly. It's faster, better, simplified

The 94-95 mustang comptuers calculate the timing very differently, have more extra features that are not used in EFI swaps, they are slower to learn, and slower to act. It's slower, and more complex.